There are plenty of games. Most of them are already included in IcAros:
Quake,doom,ScummVM,BoH-demo and many more...
In the last week there was a rush on porting games you can watch some on youtube, i added some videos on my blog
www.aresone.de.
Also included in IcAros are emulators for PSX(without bios),C64(VICE), Amiga(without roms and adf's)
68k apps can be used via UAE-integration (its in progress) this allows you to run 68k-apps in their own AROS-Windows (coherence mode) the clipboard is shared between AROS and emulated AmigaOS. Their is also a new project which would allow to run Amiga apps without the need of a kickstart-rom and workbench-files
http://emumiga.com/Some usefull apps which are also included in IcAros:
OWB for surfing the web
Mplayer
wookiechat
nowined (my favorite txt-editor with tabbing)
Lunapaint
FryingPan for burning discs or creating iso's
just to name some.
In addition you get with A-live X Cinnamon Writer and a keyfile for FryingPan(costs normally 25€)