Stop after 1 level or grid
Pick a single goal: one Jumping Clones level, one Rotate chamber or one nonogram. Level Wren gives no completion times, because none were measured and a first attempt can take far longer than a repeat.
Rest your hands between levels
Holding a mouse button for Blumgi Slime and steering Apple Worm with the arrows both repeat the same small movement. After a level, put the mouse down and look away from the screen. Stop sooner if a wrist or your eyes feel strained.
Check what each game saves
Level Wren stores no game progress. Apple Worm unlocks its levels in order, and a game on CrazyGames or Poki may keep progress in the browser; we did not test what these six remember. Clearing site data or private browsing can remove a save.
Mouse, Space bar or keyboard
Blumgi Slime takes a held mouse button or, in our check, the Space bar. Nonogram Square is a mouse game. Rotate is offered on desktop only. Touch play was not tested for any of the six.
Adverts between levels
On Poki, the settings for Rotate, Blumgi Slime and Apple Worm allow the first advert break after 2 minutes on a desktop and later ones at least 3 minutes apart. CrazyGames places adverts beside the game. If a break starts, let it finish before pressing game keys.