Birds, humans, mermaids and alternate endings

Becoming a bird: Mt. Courage's left side

1. Climb to the summit of Mt. Courage in Chapter 3 and listen to the voice's hint.
2. Jump from the summit to the left to become a bird. Do not keep testing ordinary holes by falling into them.
3. Toggle flight with B. This change does not keep your developed reptile form intact, so save the adventure before branching.

Becoming human: combine the mammal jaws and body

1. Choose a mammal at Chapter 4's Cave of Judgment. Keep a separate save if you want to retain the bird's UFO event.
2. Evolve cat-type jaws and a rabbit-type body. When the requirements are met, a Ramapithecus-type body appears.
3. Select Ramapithecus, then continue the additional body evolutions to become human. You cannot return to four legs afterward, so do not treat this as a reversible purchase.
4. Once you have a punching form, eat meat with X. Do not defeat enemies with Y and leave the meat behind, gaining no EVO.P.

Becoming a mermaid: choose it in Chapter 5's Final Sea

1. Enter the Final Sea on a mammal save. Keep it separate from data that has fully advanced to human form, and do not search for the limb option while still a bird or reptile.
2. Open limb evolution underwater and select the option to try evolving anyway.
3. Continue with additional body evolutions and check that you have become a mermaid. Do not stop after only repeating limb evolution.
4. Japanese and overseas explanations differ on costs and the number of steps, so follow the menu in your current game.

Special forms from red crystals

• These forms come from specific red crystals and are listed separately from evolutions created solely by purchasing ordinary jaws and bodies.

Remain a bird to reach Chapter 5's UFO

1. Become a bird in Chapter 3 and continue to Chapter 5 without changing to a mammal.
2. Fly farther upward from the summit of Condor territory. When you find the UFO, attack it to trigger a conversation.
3. Choosing to forgive leads to the Mars event. Afterward you return to stage selection; this is a side trip separate from the main route to Eden.

3 choices that lead away from Eden

• After these endings you return to stage selection. Do not treat them as the same achievement as the ending after defeating the final boss; resume the walkthrough from the relevant area.

Data needing further cross-checking

• All body-part stats, meat-healing amounts, boss HP and fortress-warp destinations remain unverified. Custom symbols from strategy sites are not reused without their maps.
• Parts with conflicting evolution costs, costs for each human/mermaid stage, and reproduction duration and full requirements remain on hold until the actual Japanese-version display can be checked.
• Healing at the instant HP reaches 0 and modification codes are not presented as strategy steps guaranteed to work in normal play.