A simple and general gaming journal/timeline to track which games you’ve played each month and each year. You can register start date and finish date.
This way, you can track how long it took you to finish a game and when you played them.
Example (showing most recent activity first):
30/Apr/2026: Finished Witcher 3
10/Mar/2026: Finished Megaman 11
04/Mar/2026: Started Megaman 11
15/Feb/2026: Started Witcher 3
At the end of the year, you can see a statistic of how many and which games were played each month, as well as average time (days) to finish a game, etc.