Sega Master System / Mark III / Game Gear
When you reach a special treasure pot, hit it so that the bonuses fly out, collect the extra life and walk off the screen, then walk back to the chest to collect another life. Continue this until you have enough lives to complete the game.
On round 1-1 as Astérix, enter the second well using the red bombs, and head to the left of the screen as far as you can go. Then jump up next to the blocks on top of the well and keep holding left to go through the wall and enter a secret room.
On round 1-1 as Obelix, go into the first well, and stand on the platform at the left of the screen. When it falls, walk left to go through a wall into the room.
On round 2-1 as Astérix, jump down at the right edge of the gap beneath the first two spinning platforms, and keep holding right. Alternatively, jump down the first gap and head right, then punch-jump off one of the parachuting enemies and keep holding right to go through the wall and enter a secret room.
On round 2-1 as Astérix, once you reach the second spinning platform above the water, quickly jump up to enter a secret area.
On round 2-1 as Astérix, go underwater and keep heading right until you reach a wall. Float down until you are near the bottom of the screen and keep holding right to go through the wall into a secret room.
Play as Obelix in round 2-1, jump onto the rotating platforms to the Menhir container, then jump to the platform on top. Do small steps where there isn't grass and you will suddenly fall into a secret room.
On round 2-1 as Obelix, once you reach the last spinning platform before the water, jump onto it from underneath when it is spinning, then quickly jump up to enter a secret area.
On round 2-1 as Obelix, go underwater and keep heading right until you reach a wall. Float down until you are near the bottom of the screen and keep holding right to go through the wall into a secret room.
There is a level select but it has been deliberately removed from the final ROM. There are several ways to reinstate it:
00at ROM address
The game returns to the title screen after each level.
(1) Does not appear on HUD
(2) Causes glitched graphics
(3) Use these codes to play as Astérix or Obelix in each other's levels
See the main page for Astérix