This is a bundle of solo / one plaver plus GM RPGs, mostly with animals as the player characters. from British publisher Critical Kit Ltd., including Be Like a Cat, Be Like a Crow, and several supplements. Also a solo dungeon design game, D666.
https://bundleofholding.com/presents/KitSolos

These look like they can be fun, with some interesting ideas for rewards for failure and success; for example, one of the results in Be Like a Cat, following a failed roll for agility, is "roll 1d6, and on a result of 1, your failure becomes the subject of a viral internet video," and some of the character design choices in Be Like A Crow are somewhat quirky and include cybercrows, tool-using steampunk crows, gothic horror crows, ravens guarding the Tower of London, and so forth. The rules are reasonably simple and the bundle is cheap, I think it's well worth a look.
https://bundleofholding.com/presents/KitSolos

These look like they can be fun, with some interesting ideas for rewards for failure and success; for example, one of the results in Be Like a Cat, following a failed roll for agility, is "roll 1d6, and on a result of 1, your failure becomes the subject of a viral internet video," and some of the character design choices in Be Like A Crow are somewhat quirky and include cybercrows, tool-using steampunk crows, gothic horror crows, ravens guarding the Tower of London, and so forth. The rules are reasonably simple and the bundle is cheap, I think it's well worth a look.