Greenhouse Effect - Triangle Puzzle for April 17, 2025Requires ProGreenhouse EffectThursday, April 17, 2025·547 trianglesFree gets you today's puzzle. Pro unlocks all 980+.$3/month+ local tax where applicable (details)774+ daily archive puzzles209+ Pro-only exclusivesArt Keeper Pro includedUnlock with ProCancel anytime · Secure checkout via PatreonPlay today's free puzzleAlready a member? Sign in