ArduboyWorks Making mini games for Arduboy. OBN-Y01 Hollow Seeker Go forward in right direction. Seek a hollow as refuge not to be crushed. OBN-Y02 Hopper Jump on panels and go up (foreground side). If you fall toward bottom, the game is over. OBN-Y03 Chri-Bocchi Cat Move the cat and bounce gift boxes for 2 minutes.