Okay...well a few things...although I'm appalled at your ping times. I would have expected +-150 ms - not over 240 ms
1. Hop #2 ( 95.218.160.1) is your ISP
2. You appear to be getting NAT'ed from there on until you reach hop #11
3. All the hostnames from hop #6-18 do not resolve to IP addresses, which is odd. (security by obfuscation or extremely strict Access Control Lists?)
4. Hop #8 (prs-bb4-link.telia.net) is extremely odd. This is where I suspect things went awry.
5. Hop #11 (192.205.33.25) is where you are handed off from telia.net (Swedish Telecoms company), to AT&T and you use them all the way to your destination IP address in California.
In conclusion, I'm somewhat baffled by what I mentioned in points 2, 3 & 4 above.
The root cause of your troubles with Tower!3DPro could be due to the way Feel There implements their multiplayer code.
Something along that route (inside telia.net) is breaking their method of implementing multiplayer (which I suspect is some form of openVPN), and your friends traceroute tends to bear that out.
Thank you for indulging me, and I'm sorry we weren't able to solve it.