D&D 3.x and 4e DM (and seldom player). Avid play by chat roleplayer.

Has tried too many games to be listed on this page (they don't fit the character limit).
An unformatted list of the games he has firsthand experience in can be found here.

Has also been playing a short nWoD adventure.

Coordinated and now hepls coordinate a RPG convention event twice a year (when possible) in Italy.

D&D Hall of Fame (in which Zachiel talks about how his campaigns used to die early):

Singhi's 3e campaign - started at 1000 xp, vanished into nothingness at 2995 xp.
Paolo's 3e short adventure - too much DMPCing.
Luca's 3e campaign - started as a lv3 CoDM-PC, made a lv4 PC shortly after. Still no level ups.
My 3e campaign - aborted three rooms from the end.
Marco's 3.5 7-PC-campaign - aborted for scheduling problems. Still no level ups.
Marco's 3.5 intro to RttToEE - gave DMing rights to me after 2 sessions. Arbitrary leveling up between those.
My 3.5 Return to the Temple of Elemental Evil - TPK'ed at level 8/9.
Marco's 3.5 all manuals campaign - aborted for excessive PC firepower. Guess what.
Marco's 3.5 premade characters campaign - aborted after less than 10 minutes of play.
Pierluigi's 4e Keep on the Shadowfell - gave DMing rights to me before I could level.
My 3.5 Expedition to the Demonweb Pits - Complete!
My 3e City of the Spider Queen - Complete!
My 4e Keep on the Shadowfell - Complete!
Cau's 3.5 Daemonfey Apocalypse campaign - First true level up ever! Aborted right after that.
My 3.5 Expedition to Undermountain - aborted when we got a 4e group again.
My 4e Thunderspire Labyrinth - Complete!
My 4e Pyramid of Shadows - Complete!
My 4e King of the Trollhaunt Warrens - Complete!
My 4e Demon Queen's Enclave - Complete!
My 4e Assault on Nightwyrm Fortress - Complete!
TJ's PF Wrath of the Righteous - On indefinite hyatus 2/6
My 4e Death's Reach - Complete!
My PF Curse of the Crimson Throne - Ongoing
Nicola's 5e Waterdeep: Dragon Heist - Ongoing
My 4e Kingdom of the Ghouls - Complete!
My 4e Prince of Undeath - Ongoing