Under Falling Skies – Is the Sky really falling?

Solo Sci-Fi Strategy in a Small Box

Under Falling Skies is the solo game I reach for when I want something tense, quick, and mentally satisfying without a huge setup overhead. It is a roll-and-write game about defending Earth from alien invasion, and it manages to create genuine strategic decisions from a handful of dice and a printed sheet. It is not affiliated to the TV series Falling Skies starring Noah Wyle as far as I know, I did enjoy that too.

Designed by Tomas Uhlir and published by Czech Games Edition, Under Falling Skies plays 1 player in 20 to 30 minutes. It won the Golden Geek Award for Best Solo Game in 2021.

What Is Under Falling Skies?

An alien mothership is descending on Earth. You manage a network of underground bases across multiple cities, each with its own capabilities. Each turn, you roll a set of dice, assign them to actions, and try to hold off the invasion long enough to charge your quantum teleporter and win.

The dice are your workers. The number you assign to an action determines how powerful that action is, but higher-numbered dice also advance the alien ships they are placed under. Every assignment is a calculated risk.

Key Game Information

Players	1
Play time	20-30 minutes
Designer	Tomas Uhlir
Publisher	Czech Games Edition
Categories	Solo Games, Roll and Write, Science Fiction Games, Strategy Games
Mechanics	Roll and Write, Worker Placement and Dice Placement, Resource Management
Theme	Science Fiction and Space, War and Military
Complexity	Medium-light
Best for	Solo players who want a tense strategic puzzle in under thirty minutes

How to Play Under Falling Skies

Take a city sheet. The sheet shows a grid of columns, each topped by an alien ship at varying starting positions. Below each column are base slots — numbered positions where you assign your dice. At the bottom of the sheet sits the mothership track, which descends by one space every round regardless of what you do.

Roll all six dice at the start of each round. Assign each die to one base slot on your city sheet. No die can share a column with another die in the same round. Once all dice are placed, resolve each base’s action in column order from left to right.

The base types

Research: Advances your quantum teleporter charge. This is your win condition — fill the teleporter track and you win. Higher dice generate more charge.

Fighter: Shoots down alien ships in adjacent columns. Higher dice shoot further or destroy more ships. The only way to push ships back up or remove them from the board.

Power: Generates energy tokens for use in other bases this round. Used to boost weak dice assignments elsewhere.

Lab: Produces science tokens used to unlock special base upgrades written on your city sheet. The upgrades differ between scenarios.

Bunker: Protects against alien landings. When a ship reaches the bottom of its column and lands, a bunker in that sector can absorb the damage.

The core tension

Every die placement is a two-part decision: what does this number give me, and what does it cost me in alien advancement? A six placed in the research base fills the teleporter faster but advances the alien ship in that column by six spaces. A ship that reaches the bottom destroys the base below it. Lose the research base and your win condition collapses.

Lower dice are safer — they advance ships slowly — but generate weaker actions. In the early rounds you can afford to be cautious. By the final few rounds you are rolling and immediately calculating whether any combination of assignments leaves you with a survivable board.

The left-to-right resolution order matters. A fighter base in column two can shoot down ships in columns one and three if the die value is high enough. But placing that high die means column two’s ship descends significantly. The geometry of the sheet is part of the puzzle.

Playing Under Falling Skies Solo

Under Falling Skies is a solo game. There is no multiplayer mode, no cooperative option, no way to adapt it to more than one player. Every decision was designed for a single person to make, and the game is tighter and more satisfying because of that constraint. This is worth saying clearly: if you are looking for a solo mode in a game that also plays well with others, this is not that. This is a game built from the ground up to be played alone.

The city sheets

The base box includes 18 city sheets across three difficulty tiers: Normal, Expert, and Master. Each sheet is a different scenario with a unique base layout, different alien ship starting positions, and specific special rules printed on the sheet. Some sheets give you upgraded base abilities. Some introduce new mechanics like flooding sectors or communication disruptions. Some lock certain dice values from being used in specific columns.

No two sheets play identically. A layout that rewards aggressive fighter placement in one scenario becomes a liability in another where the fighter base has been moved and the research base sits in a dangerously exposed column. Learning the sheet before committing to a strategy is part of every session.

Additional sheets are available as free downloads from Czech Games Edition’s website. The download library has expanded significantly since the game launched and adds dozens of scenarios including community-designed sheets, themed scenarios, and seasonal variants. The free content is generous enough that the replayability concern you might have about a roll-and-write — eventually running out of scenarios — is not a practical problem here.

The campaign mode

The base box includes a campaign structure that links multiple city sheets into a connected run. Campaign play introduces a meta-progression layer: your performance on each scenario determines which sheet you face next and carries over specific bonuses or penalties into subsequent games.

A campaign run takes two to three hours across multiple sessions or a single longer sitting. The connected structure creates a meaningfully different experience from standalone scenario play because decisions about how aggressively to win a scenario — whether to barely squeak through or to finish with maximum charge on the teleporter — affect what follows.

First-time players should play two or three standalone scenarios before attempting the campaign. The difficulty curve assumes familiarity with the core dice tension and the spatial logic of the sheets. Arriving at campaign play unprepared is how you get to round seven of a five-scenario campaign and realise you have been misreading the fighter base range for three sessions.

Difficulty and replayability

The three difficulty tiers create a natural progression path. Normal sheets introduce the core mechanics clearly. Expert sheets begin restricting your options and introducing asymmetric starting conditions. Master sheets are difficult in ways that feel designed rather than arbitrary: the constraints are different from Expert rather than just harsher versions of the same problems.

Beyond the built-in progression, the random dice rolls mean no two attempts at the same sheet are identical. A Master sheet you have completed twice will play differently on the third attempt because the dice fall differently in critical rounds. This is one of the reasons the game holds up across many sessions in a way that other roll-and-writes sometimes do not.

Under Falling Skies is a proper solo game, not a solo mode bolted onto a multiplayer design. The decisions it generates are specifically calibrated for one player and it shows. It is tighter and more satisfying than many dedicated solo modes in much larger and more expensive games.

Playing Under Falling Skies at Different Player Counts

Under Falling Skies plays one player only. There is no variant for two or more and no way to adapt the game for a group. The dice assignment system and the base layout are designed for a single person making all the decisions each round.

If you want a similar thematic experience for multiple players, Spirit Island handles the alien-invasion defence theme cooperatively for one to four players with significant depth. For a roll-and-write that does support multiplayer, Cartographers and Welcome To… are both strong options. Under Falling Skies is not the right tool for group sessions.

Components and Production Quality

Under Falling Skies comes in a compact box. The 18 included city sheets are printed on heavy card stock with good ink contrast — the column grid and base slots are clear and readable at the table. The sheets are single-use, so the box includes enough for multiple campaign runs but the supply is finite for standalone play.

Czech Games Edition address this with a free PDF download of all base game sheets, printable at home. Most players who play the game regularly print their preferred scenarios rather than consuming the physical sheets. A standard printer and an A4 sheet of paper is all you need. Some players laminate frequently-used sheets and use dry-erase markers for a reusable version.

The six dice are standard quality, nothing remarkable but nothing problematic. The small reference card covering base types and special symbols is genuinely useful in the first few sessions.

Setup takes about two minutes: place the sheet, grab the dice, start. There is no board to lay out, no component sorting, nothing to shuffle. For a game this short, that zero overhead is meaningful. You can finish a session and reset for another attempt faster than most games reach their second turn.

Expansions and Other Versions

Promo Sheets (various): Czech Games Edition and partner publishers have released additional city sheets as convention promos and event exclusives. These are occasionally available through BGG trades or at game fairs. Worth pursuing if you encounter them but not essential given the free download library.

Print-and-Play content: The free download library from Czech Games Edition is substantial enough to count as unofficial expansion content. As of mid-2026 it includes more scenarios than the base box and continues to expand. The link is available from the game’s page on the CGE website.

There is no boxed expansion for Under Falling Skies. The free content model has been Czech Games Edition’s approach for this title and it is well-executed. The base box is the complete physical product.

Digital Versions

Under Falling Skies does not have an official digital implementation on Board Game Arena or a dedicated app as of mid-2026. Given its solo nature and the minimal setup of the physical version, a digital app would be the natural format for it. Czech Games Edition have not announced one.

A Tabletop Simulator mod exists for remote play, though this requires both players to own Tabletop Simulator on Steam and is an unofficial implementation. For a strictly solo game with a two-minute physical setup, the digital gap is less acute than it would be for a multiplayer title.

If You Like Under Falling Skies, Try These

Friday (Freitag): The classic introductory solo card game. Lighter and faster than Under Falling Skies, with a deck-building mechanic rather than dice placement. If you want something even shorter and slightly less demanding for solo sessions, Friday is the starting point for many solo gamers.

Spirit Island: The closest experience for players who want Under Falling Skies’ theme of defending against invasion but want to play with others. Cooperative for one to four players with deep asymmetric powers and significant complexity. A major step up in length and rules but a natural recommendation for players who want more.

Cartographers: A roll-and-write for one to four players that generates a different kind of solo satisfaction — map-drawing and spatial planning rather than crisis management. Good companion recommendation for players who liked the roll-and-write format but want something with a lighter tone.

Mage Knight: For solo players who want Under Falling Skies’ intensity scaled to a full evening. Deck-building and exploration, deeply complex, plays 1 to 4 with an excellent solo mode. A very different game but shares the quality of generating memorable solo sessions with high-stakes decisions.

One Deck Dungeon: Solo or cooperative dungeon-crawling in a compact box using dice placement on a character sheet. Shares Under Falling Skies’ emphasis on dice assignment and crisis management, in a fantasy setting with RPG progression. A good horizontal recommendation for the same audience.

Final Thoughts on Under Falling Skies

Under Falling Skies is one of the best solo games at its size and price point. The roll-and-write format keeps setup at two minutes. The dice assignment tension creates genuine strategic decisions every round, not just optimisation puzzles. The variety of city sheets gives it replay depth that belies the compact box.

The quality that separates it from most games in its category is that it is a real solo game. The decisions it generates are specifically calibrated for one person making all the calls each round. There is no watered-down multiplayer mode dragging the design toward compromise. Every base type, every column layout, every ship advancement rate was tuned for a single player’s experience, and you can feel that in how consistently satisfying the tension is.

Its weaknesses are the format’s weaknesses. Solo only, always. Sheets are single-use without printing. The physical components are minimal. Players who want a substantial game with components to handle and a table presence will find it too small.

For solo players specifically: if you have 20 minutes, a flat surface, and a printer, Under Falling Skies is one of the best ways to spend that time in the hobby.

One sentence verdict: Under Falling Skies is the best solo game in a small box — a properly designed solo experience that generates genuine tension in under thirty minutes without a single wasted component.

Don’t Take My Word For It