Angband is a free, roguelike dungeon exploration game you can download from https://rephial.org, or play right through your web browser at https://angband.live .
And it's open source, so you can even download the source code and compile it yourself. My step-by-step guide to compiling the ASCII version of the game in Windows is on the Angband forum: http://angband.oook.cz/forum/showthread.php?t=11013
The Windows ASCII version I'm running in this video is one I compiled for myself from the latest, version 4.2.3-262 source code (plus my customized title screen):
0:00 - wrong save file 'p'
4:18 - floor 16
5:15 - floor 17
11:35 - invisijerks (dark hounds, etc)
16:18 - umberish hulks
37:18 - crafty forest troll ambush!
41:58 - I may not be able to beat these fleas
49:18 - floor 18
52:38 - teleported--it's a huge twisting cavern!
56:38 - too much good stuff
This big twisty tunnel cavern level thing is neat, and makes it challenging to fight off attackers. Gonna have to keep deciding on what of my cool loot to toss, though--finding so much neat stuff!
smbhax 2000 currently has 3,245 views spread across 54 videos for Angband. This game accounts for over 3 days of watchable video on his channel, roughly 2.40% of Angband content that smbhax 2000 has uploaded to YouTube.