Here is an old Dreamcast homebrew game created by OneThirsty8 called Garf Orlock's Bathunt. I guess for its time you could have called this interesting and if i'm correct this game is a little buggy and not really that exciting. In the game you have to grab 10 bats once completed game over. Apparently though things can get a little tough cause if your not quick these bats will destroy you. I believe the reason why the developer created this was for testing purposes.
Download is available at: http://web.archive.org/web/20060212193430/http://www.dchomebrew.org/bathunt.shtml
ISO Make is available at: www.dc-swat.ru/page/dreamshell/