Well......let's see here..... how about a trick for Radical Rex for the Genesis/CD? 
 
Radical Rex for Genesis and Sega CD version:On controller 2 at title screen type:A C Down, RIght, Up, B 
 
Nba Jam for Sega CD: how about a little "Juice"? at the Tonight match up scrreen 
Type:Up,Right,Down,Left, and A,B,C 
 
Panic for Sega CD:for level Selectability and even warp to the end stage: 
at title screen:Right,Right,Down,Up,Left,Right,Up,Up,Left Down 
 
Android Assault for Sega CD:for hidden options screens at the title screen type: 
Up,B,A,C,A,Down,B,A,C,A now go to options screen and hit left. A hidden option appears. Hit left again to bring up a second option 
for invincibility. 
 
Heart of the ALien for Sega CD: 
Level 2 :KGDD 
Level 3:DGBL 
Level 4:RLRB 
Level 5:RJLG 
Level 6:RJLG 
Level 7:LKHC 
Level 8:HJJG 
Level 10:CXLD 
Level 13:CDJR 
Uh,..oops. A typo up there! Level 4 passcode I do not have! Disregard it. The Level 5 passcode posted up there is also wrong, use the  
Passcode shown for level 4 to actually get to level 5 sorry for the gaff.... 
 
HAve Fun! 
 
Emperor Cybersurfer/Ass't SysOp 
