The game is a mix of JRPG and mech building. The game focuses on weapon and upgrades for the MASS as players advance, gather materials and complete missions. Players man a M.A.S.S and they must fight against creatures called Quarks, as well as commanding their own organisation. The game features over 38 different mech parts to assemble and customize with virtual paint and decals. The game is occasionallyupdated and has weeklydevelopment blog posts by the developers.
Reception
On its release, MASS Builder was met with "positive" reviews from critics. BagoGames write that, "While the opening sequence of M.A.S.S. Builder's is a bitcliché, it has a good premise. It immediately grounds the player into a story befitting for Mecha games. Also, the in-game world is somewhat compelling and rich with information to immerse yourself in.