Metroid is a platform adventure game where you play as Samus Aran, a bounty hunter with a mission to destroy Mother Brain. Mother Brain has infested the planet Zebes with a life form called Metroid, a very deadly alien creature capable of massive destruction. You will have to explore several areas on the planet in order to find all the power ups and missiles you'll need to complete that task. Bosses Kraid and Ridley will have to be vanquished as well.
See the guide on Easy Cheats to find out how to use these.
0107 - 09 - Infinite Hit Points 6877 - 06 - All Energy Tanks 6879 - FF - Infinite Missiles 6878 - 7F - Always Have All Items and Wave Beam 6878 - BF - Always Have All Items and Ice Beam 010B - 99 - Infinite Escape Time
000F - Samus State 08 - Ball 0C - Spinning 12 - Jumping 14-16-18 - Walking 1A - Shooting 0051 - Samus X Pos on Screen 0052 - Samus Y Pos on Screen 00FC - Y Camera Pos 00FD - X Camera Pos 00FF - Name table position? 0106 - Hit Points x9 (High nybble is display, low nybble is 1/10 of Hit Point) 0107 - Hit Points 9x (First value is the number of energy tanks full) 010A - Escape time: xx9 (uses a hidden tenth of a second) 010B - Escape time: 99x 0380 - Door 1 - State 00 - Open 01 - ? 02 - Closed 03 - Opening 04 - Samus Entering 05 - Samus Through 038F - Door 1 - Closing Timeout (If Blue), Hit Points (If Red) 0400 - Enemy 1 - Y 0401 - Enemy 1 - X 0409 - Enemy 1 - Counter (Used by Skree) 040A - Enemy 1 - Direction Flag 040B - Enemy 1 - HP 0400-045F - Enemies 0570 - Block - State (0 - Solid, 2 - Breaking, 3 - Destroyed) 0577 - Block - Timeout 6877 - Energy Tanks 6878 - Item bit flag 00 - None 01 - Bombs 02 - High Jump 04 - Long Beam 08 - Screw Attack 10 - Ball 20 - Vira 40 - Wave Beam 80 - Ice Beam 6879 - Missiles 687A - Max Missiles 687D - Total Play Time Counter 69B3 - Armor Flag (00 - Armor, 01 - Bikini) Note: Doesn't reset in normal game play.
Metroid has both uppercase and lowercase letters, although the lowercase set is only used in passwords. It's a neat and concise set, like most games made by Nintendo.
00=0 01=1 02=2 03=3 04=4 05=5 06=6 07=7 08=8 09=9 0A=A 0B=B 0C=C 0D=D 0E=E 0F=F 10=G 11=H 12=I 13=J 14=K 15=L 16=M 17=N 18=O 19=P 1A=Q 1B=R 1C=S 1D=T 1E=U 1F=V 20=W 21=X 22=Y 23=Z 24=a 25=b 26=c 27=d 28=e 29=f 2A=g 2B=h 2C=i 2D=j 2E=k 2F=l 30=m 31=n 32=o 33=p 34=q 35=r 36=s 37=t 38=u 39=v 3A=w 3B=x 3C=y 3D=z 3E=? 3F=- 40=! 8F=© FF=
Famicom Disk System
Metroid was originally released as a Famicom Disk System game.