umm idk just look inside? PLAY FINALLY WORKS KNOWN BUGS: the upgrade icons, the trash icon location, the defeat or win system, the [[ERROR: enemies doesn't appear in the waves yet]] YOU HAVE TO HAVE AN ACCOUNT OR ELSE SAVES WON'T WORK! NO LAG OPTION! what that means is when this game fully comes alive your going to have to remix it every time it updates because save stuff, so go inside to the "IF REMIX" sprite and click what ever is inside and then press remix only if you haven't and then your done you can play the game without lag or unless you have a pretty bad computer which can't handle A SINGLE SCRATCH GAME :(