Purely by chance, I found an obviously abandoned but still fun to play mini tower defense with a skippable tutorial level and two playable missions, beautiful graphics and performance settings.
To be a master is to spam en mass
So you place towers and the shoot enemies that move towards your base. I know this! Being an impatient player type, I skipped past the tutorial and was annihilated in level 1.
Short enough messages in a hard enough tutorial level
The degree of my destruction was such, that I was thankful for the tutorial being there at all. Even though I did die in it, it taught me enough about the all-or-nothing early game (which some might refer as to "unbalanced") to get my strategy right.
Turn off for speed. Turn on for awesome!
You get 3 towers: that allows you to build more tower, one that allows you to shoot more and one that shoots. You can block paths and create mazes. There are no tower upgrades and that's okay.
All the plot. Space to continue. Take that non-skip-able intro video AAA games!
Mission #3 is not possible to win (prove me wrong) but it was a great experience to find that I was able to beat the tutorial mission after all. By deviating from the given instructions! If that's not freedom (besides being open source) then I don't know what is!
Come to think of it, the ridiculousness of level 3 practically speaks "dear player, you should totally fork and make new levels!"
Made with love2d
The last commit to Turres Monacorum was in May 2014 and the game was made at a game jam. My experience dictates that this won't be picked up by the original developers any more but to any player with love2d installed, it will come as a wonderful, visually polished snack!
Download the mini tower defense game from the github release page and enjoy!