Play Mario W-256 (SMB1 Hack) Online

Game Overview

Mario W-256 (SMB1 Hack) is one of those ROM hacks that takes the original Super Mario Bros. and stretches it into something unfamiliar. The levels are longer, weirder, and packed with traps—like someone took the first game and fed it through a funhouse mirror.

You’ll recognize the mechanics, but the layouts feel almost experimental. Some jumps require pixel-perfect timing, and there are stretches where enemies just keep coming. It’s not unfair, but it demands patience—mistakes pile up fast.

If you’ve played the original to death and want something that twists the formula without losing the core feel, Mario W-256 (SMB1 Hack) does that. Just don’t expect a casual replay.