SRD - Super Real Darwin

* Power-up items :
1) Evol : evolution item. Power-up your ship.
2) BEvol : black evolution item, released by the big ships. Also powers-up your ship. It can be changed to an Evol item by shooting at it.
3) Ar : armour item. It is released by some enemies. Unlike the evolution items, it moves upwards.
4) Sp : speedup item. It is released by some enemies. Unlike the evolution items, it moves upwards.
5) DNA : it is released by the ground lizards.
6) Egg : available after destroying each stage boss. It adds a second ship that shoots sideways and can also be upgraded by collecting evolution items. Its evolution level is at most equal to the main ship level.

* General sequence :
1) When you are not invincible -> (get hit by a bullet) -> PISTER
2) All states -> (fixed time without collecting power-up) -> degenerate
3) PISTER -> (get hit by a bullet) -> die
4) All states -> (get hit by an enemy) -> die

* Evolution sequence (when you collect an evolution item) :
PISTER -> HODOYODO (your stating level) -> ZWIPIP -> DARIER -> SYULBA -> QUILL -> LBOCK -> SWEEP -> DLIME -> ARTDEAME -> SLUGBU -> GYASYALBA
(if you collect BEVol while you are DARIER, ZWIPIP or ARTDEAME then the evolution sequence is different, see below)

* Degeneration sequence (at fixed time without collecting an evolution item) :
1) GYASYALBA -> SLUGBU -> ARTDEAME -> DLIME -> SWEEP -> LBOCK -> QUILL -> SYULBA -> DARIER -> ZWIPIP -> HODOYODO
2) FC FDIVI -> FOUR DIVI -> TC TDIVI -> TWO DIVI -> ARTDEAME -> DLIME -> SWEEP -> LBOCK -> QUILL -> SYULBA -> DARIER -> ZWIPIP -> HODOYODO
3) DARIER-4S -> DARIER-4 -> DARIER-3 -> DARIER-2 -> DARIER -> ZWIPIP -> HODOYODO
4) PISPIDER -> PISTER
5) GOAT DEAM -> PISTER
6) PISNAKE -> PISTER

* Mutation sequence :
1) All levels -> (hit the orange explosions released by the ground bugs) -> PISPIDER (bullet invincible)
2) ARTDEAME -> (collect BEvol) -> TWO DIVI -> TC TDIVI -> FOUR DIVI -> FC FDIVI

* Opposite evolution :
1) SLUGBU -> (degenerate) -> GYASYALBA (but shooting like ARTDEAME) -> (get hit by a bullet) -> GOAT DEAM (bullet invincible)
2) All levels, except PISTER and the invincible levels -> (destroy some water snakes) -> (get hit by a bullet) -> PISNAKE (bullet invincible)

* Bomb upgrade :
1) DARIER -> (collect BEvol) -> DARIER-2 -> DARIER-3 -> DARIER-4 -> DARIER-4S (bomb upgrade)
2) ZWIPIP -> (collect BEvol) -> ZWIPIP-2 -> DARIER-4 -> DARIER-4S (bomb upgrade)

* Bug? feature? : Under the attract mode the ship can me moved by the player as long that screen persists. It can fire both shots. Only in the Japanese version of the game.