SEGA Ages Sonic 2 was also announed but since everyone expected that =P
Also they showed the results from the twitter poll
translation from someone in the chat :
1- Jet Set Radio Series
2 - Shenmue 1 & 2
3- Panzer Dragoon Saga
4- Virtua Fighter
5 - Shining series
6- Panzer Dragoon Series
7- Sakura wars
8- puyo series
9- Virtual on
10 - Burning Rangers
11- skies of Arcadia
12- NiGHTS
13- Golden Axe
14 - Bug King Series (?)
15 - Phantasy Star Online
16- Space Channel 5
17 - Outrunners
18 - Sonic Adventure series
19- DAYTONA USA
20- SPikeout
21- Dynamite Deka series
22 - Sonic 3&K
23- Virtua Racing
24- Fantasy Zone
25 - Dragon Force
26 - Sega Rally
27- Phantasy Star series
28 - Guardian Heroes
29 - Outrun 2 SP
30 - Wing War (?)