VNDB link: https://vndb.org/v7490
Synopsis: The sequel to the "Future Investigator Bravan" story told in VIPER-V12, VIPER-F50 continues the tale of Bravan and his partner Anri as they fight against the forces of Donarghe and its army of mutants. Colonel Gel returns with a plot to defeat Bravan by capturing Anri and fellow investigator Shine. However, Gel's plot for world domination unknowingly hinges on the faith and abilities of her young protégé, Mari.
Length: 1 hour 30 minutes
Game type: SF police patrooling story
Difficulty: Very easy, one way road.
Character Design rating: 6/10
Protagonist rating: 7/10
Story rating: 2/10
Game quality: 6/10
Overall rating: 5/10
Humor: There is one nice character in the game. It's donnage stag beetle monster. He retains his human feelings and behaves like a grandpa to Mari. He defends Mari before Gel-sama, then tries to attack Bra-Ban first in order not to traumatize Mari. Upon defeat he conveys to Bra-Ban that Mari would have explosives in her weapon secretly inserted by Gel-sama, and that information allows to pacify Mari. So these geezer talks of Stag beetle donnage deliver quite a lot. All those superhero ranger banters also were funny at times.
There aren't real themes. One semi-theme is sacrifice as Anri put on suit her body could not handle to help friends. The other semi-theme is humanity as Mari regains her humanity and Stag Beetle donnage retains his humanity up to the end.