All of these games are free, most are open source.
For challenge and variety there's a different game for each day of the week:
Monday - former computer world champion wBridge5
Tuesday - classic racing sim Grand Prix Legends demo, with dozens of freeware add-on cars and tracks
Wednesday - Leela Chess Zero, open source clone of world champion Alpha Zero, adjusted to play at your level
Thursday - classic flight and war sims Rowan's Battle of Britain and Rowan's Mig Alley, restored and with higher resolution, simulating, respectively, the 1940 air battle over England and the 1950 Korean conflict
Friday - open source clones of Alpha Zero configured to play Go, along with training and analysis software
Saturday - the other classic flight and war sim, Falcon, simulating air combat and command in historical Cold War-era conflicts.
Sunday - day for make up if you missed any days earlier in the week
Formulas for calculating daily and cumulative weekly scores are provided, helping you track and improve your performance.
To run the games, download the tar file from the esports for engineers github site, then simply unpack the tar file on linux. The wine emulation layer on linux is needed to run the games. Knowledge of linux command line, and how to execute a linux shell script, is required.
Comments and Reviews
esports for engineers contains 3 classic simulation games: Mig Alley, Grand Prix Legends (free demo version) and Falcon 4. Wikipedia entries and reviews for these games are below:
For Mig Alley, named the best simulation of 1999 by Computer Gaming World, PC Gamer US, CNET Gamecenter, Computer Games Strategy Plus and GameSpot:
https://en.wikipedia.org/wiki/MiG_Alley_(video_game)
https://www.combatsim.com/review.php?id=351
https://www.combatsim.com/htm/nov99/mig-rev2.htm
For Grand Prix Legends, Computer Games Strategy Plus's 1998 "Sports Game of the Year":
https://en.wikipedia.org/wiki/Grand_Prix_Legends
A recent review of Grand Prix Legends, complete with dozens of freeware add-ons, is here: https://www.onlineracedriver.com/2020/01/07/new-grand-prix-legends-2020-demo-released/
The esports for engineers' version of Grand Prix Legends includes the mods and updates described in the review; in addition to that the esports for engineers' version provides 80 racecars and 30 racetracks.
Another recent review is here: https://www.pcgamer.com/why-i-loved-hardcore-racing-sim-grand-prix-legends/
Falcon 4 won Macworld's 1999 "Best Flight Simulation" award and PC Gamer US likewise named Falcon 4.0 the best simulation of 1998.
https://en.wikipedia.org/wiki/Falcon_4
Some reviews are here:
https://levelskip.com/simulation/Freefalcon-6-Combat-Flight-Simulator-Review-for-PC
https://www.simhq.com/_air14/air_507a.html
Since I wrote this comment, the Rowan's Battle of Britain flight sim has been added to eSports for engineers. As with the other 3 sims, this is an incredibly ambitious sim that rewards any investment you make into it. This is the final version of Rowan's Battle of Britain which includes three patches. This sim works great on linux with Ubuntu 20.04 LTS, wine 6.7 and a dual monitor setup.
https://www.metacritic.com/game/pc/rowans-battle-of-britain
https://en.wikipedia.org/wiki/Rowan's_Battle_of_Britain