How-to

Find your next little obsession

A quiet puzzle or a quick burst of chaos? A field guide to the arcade, organized around the kind of decision you feel like making.

By ClickClick · · 4 min read

Sideways — free online brain teasers and lateral-thinking puzzles at ClickClick

For a quiet puzzle: Afterglow or Sideways

Afterglow gives you a board of windows and a clear goal: turn them all on. Every press changes neighboring lights, so the interesting work is predicting consequences. Pick it when you want to test a small idea, undo it, and try again without a chase pushing you forward.

Sideways uses ten short rooms of words, patterns, numbers, and misdirection. The problem changes between rooms. Choose it when noticing a hidden assumption sounds more appealing than learning a single system. Read the entire clue before deciding which detail matters.

For a table you can think over: Stack 21

Stack 21 deals one card at a time into four lanes. Making exactly 21 clears space; going over costs a life. You are deciding how much flexibility to spend now and how much to leave for later. Pick it when you like simple arithmetic with consequences across several moves.

It suits a pause between decisions better than a reflex game. That does not mean every deal has a painless answer. The limited burns make an awkward card a choice about the whole table, rather than an automatic discard.

For moving pieces: Blockfall or Pulse Run

Blockfall is about fitting falling shapes into a stack and clearing complete horizontal lines. The hold slot lets you keep one piece for later. Choose it when reading empty space feels satisfying and you want to practise making a useful placement before the piece lands.

Pulse Run changes the question from placement to movement. Collect gold signals, keep a combo going, and use a dash to phase through red danger. Pick it when you want a short, active session and have the attention to keep moving. A quiet puzzle is easier to interrupt mid-decision.

For one committed experiment: Blackhole Run

In Blackhole Run, you set a trajectory and release once. Gravity bends the route, the edges wrap around, and rival black holes can become either obstacles or opportunities as your mass changes. The fun is in making a prediction and watching a whole attempt test it.

Try changing one part of a failed launch, such as direction or thrust. That gives you a more readable experiment than moving both at once. Choose this game if watching a plan unfold is as interesting to you as setting it up.

For a longer visit: Clean Sweep

Clean Sweep puts you in charge of Pip, a little robot vacuum in a house of living dust. Attacks fire automatically while you move, collect crumbs, and choose upgrades. Three stages lead to a boss, with a six-night campaign and workbench unlocks beyond a single attempt.

Give this one more room than a spare minute. Pick it when you want an evolving run, a character to steer, and upgrades that change the decisions ahead. Keyboard, touch, and gamepad controls are supported.

Start with one game, then change the pace

All seven games open free in your browser without an account or a separate download. Check each game's controls before you start. Supported saves stay in the same browser and device; there is no account-based sync.

You do not have to pick a favorite in advance. Try one puzzle or one run, notice which part made you want another turn, and choose the next game from there. The arcade below is always a short trip back.

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