Gridlock Genius

Gridlock Genius is a big bundle of bite-sized logic puzzles that share one thing: everything is a grid you have to untangle. Some levels are about sliding blocks to an exit, others about connecting pipes or routing power without crossing wires.

The difficulty curve is well judged. Early puzzles teach the rules quietly, and by the later packs you're staring at the screen for a while before the answer clicks. There are hundreds of levels, all offline, plus a daily generated puzzle that saves locally.

If you like brain teasers you can dip into during a coffee break, this is an easy recommendation. My only gripe is that a few puzzle types overstay their welcome.

What we liked

• Hundreds of offline levels
• Smart difficulty curve
• Daily generated puzzle