Tokage Shojo (Lizard Girl) is a single-screen arcade game made for the NicoNico IndiesGame Fest. The objective here is to catch over two dozen lizards in each stage to progress. If you allow a lizard to touch a passerby, they will turn green and begin to chase after the player. You lose a life if you collide with an infected person, and the game ends when you run out of lives.
Coins can be collected to separate the lizards from any individuals that have turned, giving you a few precious seconds to act as everyone is stunned and unable to move. There are fewer coins to gather in latter stages, but they do eventually respawn after some time.
Lizard Girl can be downloaded from Ikuukan’s site (Dropbox link).