My largest published video games, and games that I’m the most proud of, are the following. Each took many months to complete:

Princess Civilization
(2013)
A 4X Civilization-like My Little Pony-themed strategy game. Inspired by Civilization V.
The following games are complete and took weeks or months of work:

Najdi cestu ven! (2020)
Technical demo of an escape-the-room game. Available for Windows and Android. In Czech only, from a Scouting environment. Inspired by 999.

Platformer flash game with time travel and time dilation. Can be played online.

Oracion Online (2016)
Multiplayer collectible card game.

A programming puzzle game about parallelism. Winner of the hackCambridge hackathon.

Choose-your-own-adventure online gamebook. There is a pony version and a normal version.
The following games are complete but are small and were made in less than a week, usually for a game jam:

Turn-based simulation game made to help fight the COVID-19 pandemic.

City-building game made for a My Little Pony game jam.

Adventure (2012)
Text adventure game made for a My Little Pony game jam.