Fill the Gap

Can you slide every block into place before the timer hits zero? One wrong move and the whole puzzle collapses.

Fill the Gap is one of those games that looks dead simple at first glance, then quietly eats your afternoon. You control a small block on a grid, and the goal is to push all the scattered pieces into the empty spaces. Sounds easy? The grid is full of one-way paths, locked tiles, and corners that trap you if you're not paying attention. I kept telling myself “one more level” and suddenly an hour was gone. What really hooked me is the way the game punishes greed. You'll spot a gap on the far side of the board and think you can snake your way over there, only to realize you've blocked the only exit for another piece. Every level feels like a tiny engineering problem: you have to plan three moves ahead, undo mentally, and then commit. The swipe controls on mobile are tight, but I actually prefer the keyboard on PC — WASD gives you that extra fraction of a second to abort a bad slide. There's no story, no upgrades, no microtransactions. Just you, a grid, and a series of increasingly sadistic layouts. The satisfaction when the last block clicks into place is real, though. If you like puzzle games that respect your intelligence but don't waste your time, this one's a keeper.

PC: WASD or arrow keys to move Mobile: Swipe

Work backwards from the final gap — it's easier to see which block must go in last. If a move feels irreversible, it probably is. Pause and scan the whole grid first. Use corners as temporary parking spots for blocks you'll need later. On PC, tap the arrow keys rapidly instead of holding for finer control. Don't be afraid to restart a level early — sometimes the first three moves are already wrong.

Q: Is Fill the Gap free to play? A: Yes, it's completely free in your browser, no hidden charges. Q: Can I play Fill the Gap on my phone? A: Yes, the game supports swipe controls on mobile and works in any modern browser. Q: Do I need to download anything to play? A: No downloads or installs needed, just open the page and start sliding. Q: What are the controls on PC? A: Use WASD or arrow keys to move your block around the grid. Q: Is there a time limit in each level? A: Some levels have a timer, but many are untimed — check the top of the screen. Q: Can I play Fill the Gap offline? A: No, you need an internet connection to load the game.