Stack Happy

Stack Happy is pure pick-up-and-play. Blocks slide across the top of the screen, you tap to drop them, and the tower grows as long as your timing holds. Miss the alignment and you shave the overhang off; miss badly and it's game over.

It sounds simple because it is, but the difficulty curve is tuned beautifully. Everything speeds up just as your confidence peaks, and the little chime when you nail a perfect stack is dangerously satisfying.

There's a daily challenge and a handful of colour themes to unlock, which is plenty for a game you'll open in queue lines. Ad breaks are optional and never forced mid-run, which we respect.

What we liked

• Instant, no-tutorial fun
• Perfectly tuned difficulty
• No forced interruptions