u/BlackBes

Hi! I’m the developer of Fillup.
It is a turn-based strategy game that runs directly in the browser.

Players take turns adding pieces to cells. When a cell reaches its limit, it sends pieces into neighboring cells and captures them. Those cells can also react, turning one placement into a cascade across the board.

You can play a solo Campaign, set up a local 2–4 player table, challenge a friend, or compete in Casual and Ranked matches.

There is nothing to download, and you can start without creating an account or providing an email address.

Play it here: https://fillup.fun

Hope, you'll like it!

Hi! I’m the designer and developer of Fillup, an original digital tabletop strategy game that is now in public beta.

Each turn, you place one directional slice into an empty cell or a cell you control. Corners hold 2 slices, edges hold 3, and center cells hold 4. When a cell becomes full, it sends a slice into every neighboring cell, captures them, and can trigger a larger cascade. The last color standing wins.

You can play:

- a solo Campaign with handcrafted encounters
- local matches for 2–4 players
- online Casual, private, and Ranked matches

You can start a guided match without creating an account or providing an email. Ranked play and saved cross-device progress require an account.

Play here: https://fillup.fun

Thanks for taking a look. I’ll be here to answer questions and hear criticism.

Hi everyone,

I am looking for playtesters for Fillup, a turn-based strategy game about filling cells, capturing territory, and triggering chain reactions. I specifically want to learn whether the core mechanic is understandable, strategic, and fun.

I first came up with Fillup more than nine years ago, and this is the third major iteration I have built. I have kept returning to the concept through years of experiments and restarts because I care deeply about it. That personal investment also makes it difficult for me to judge the mechanic objectively, which is why outside feedback would mean so much to me.

This is an unpaid playtest, and the game itself is free.

Playtest details

• Platform: Browser, desktop or mobile
• Download: None
• Account: No email or password required
• Suggested time: 10–15 minutes
• Test build: https://fillup.fun
• Feedback: Please leave a comment on this post

Select Play now, complete the short guided lesson, and try one or two Campaign battles. There is no need to explore the rest of the game for this test. If you lose interest before finishing, please tell me where. That is valuable feedback too.

On each turn, you place a directional slice into a cell. When the cell fills, it sends pieces into neighboring cells, captures them, and can trigger a larger cascade.

What I would most like to know

• Did triggering a chain reaction feel satisfying?
• Could you understand and predict why cells reacted?
• Did your choices feel meaningful and strategic?
• Did the mechanic remain interesting or become repetitive?
• Was anything confusing or frustrating enough to make you stop?

Short and blunt feedback is welcome. Even one sentence about where you had fun, became confused, or lost interest would help me improve the mechanic.

Thank you for testing it.