Will have to check out your link when I get home as per not able to get to youtube from work...
But UT99 is Unreal Tournament 99 and I hosted a server for about 2 years until it cooked on hot summer day in my previous home a mobile home when wife decided to shut off the AC to save money on electric bill and my Pentium III 850Mhz UT99 server blistered its wafer and let out its secret smoke. There was a map that I hosted called DM Massive Bedrooms which was like Toy Story where your the size of Army men running around hiding in Lego houses and toy school bus or under a bed in bedroom etc. I had this map down to where I knew all the good areas were to snipe and frag people from and would pop in occasionally and what was fun is when others found these sweet spots and you had to take them out in which special weapons and invisible armor was used to sneak up on someone who thinks they are tucked away in a snipe spot to headshot people or I would use a missile that had option to launch it and run or alternate guide the missile in to its target in which it was funny to fly it around and scare players thinking they are targeted to be wiped out and I would laugh and fly it around and guide it into an area with multiple targets and the shock wave is like M.O.A.B in which you can take out everyone in a large area. I'd have up to 16 people there at a time fighting, sometimes I would have bots running around which you could set them from easy targets to a difficult setting where they are on you like flies on cant say.
The maps that come with the game I had most of them down. There are a few I dont play because it gives me wicked vertigo these are the space station ones where the station is rolling in space and when moving on the station that is rolling it wigged out my vertigo like feeling so I said I cant play those.
What i like is that so many people made custom maps for UT99 and shared them online. The one day i set out to gather them all and it was 14.1GB in map files which are hundreds of maps. Some custom maps are VERY ADULT and cant go into details about why. Most are decent, but I found Massive Bedrooms and that became my favorite and that was made by someone and is not a normal map that came with the game.
Here is the map for massive bedroom.
http://www.mapraider.com/maps/unreal-tournament/deathmatch/4617/DM-!(htr)Massive-BedroomUT99 is a great game and still has a good following of people playing stand alone or multiplayer online on hosted servers etc. The game I have had run on as weak as a Celeron 500Mhz 256MB RAM with a 64MB video card. I havent tried it on anything beyond Windows 7 but it runs on Windows 7 64-bit all the way backwards to Windows 2000. Might even run on Win 98 SE. Only thing about this game is that it was designed back when CPU's were 1 core and I have had to set Core Affinity to 1 core of a 4 core CPU to get the game to not freeze frame. It runs smooth with core affinity set to 1 core on a multicore CPU for systems that have issues with UT99 that are multiple core processors. It seems as though AMD processors that are multiple core seem to act up more than Intel multiple Core CPUs. But setting Core Affinity for the game to run on say Core 0 and not on Cores 1,2, and 3 of a 4 core CPU is the fix.