Thunder Fox (USA)

Normal-game clock starts at 100

Normal-game clock starts at 200

Normal-game clock starts at 250

Long-game clock starts at 400

Long-game clock starts at 500

Long-game clock starts at 750

Long-game clock starts at 999

Infinite time (most of game)

Start with 1 life

Start with 2 lives

Start with 4 lives

Flame throwers have less fuel

Each bazooka holds 2 rounds

Each bazooka holds 5 rounds

Each bazooka holds 9 rounds

Each machine gun holds 10 rounds

Each machine gun holds 25 rounds

Each machine gun holds 50 rounds

Each machine gun holds 99 rounds

No loss of life if sucked into space

All weapons have unlimited capacity

Invincibility

Start with 2 credits

Start with 4 credits

Start with 8 credits

Start with 10 credits

Infinite credits

Start at stage 2

Start at stage 3

Start at stage 4

Start at stage 5

Start in stage 5 against giant robot

Infinite Time

Infinite Health

Infinite Lives

Disable Hit Detection (True Invincibility)

Invincibility