let's begin
first you need to activate Extras Devel in your catalog in hildon app manager(or add it) you should be able to get the catalog activation link at repository.maemo.org
second you need to update the catalog list(warning:lots of updates or new applications may appear, remember that they are unstable and you should not use them unless you have accepted the risk)
go to X-Terminal
type:
root
apt-get install preenv filebox
wait for installation
exit X-terminal
In PC:
copy (or cut) the game folder after extracting it( first extract the .ipk file with 7zip in pc then extract the data.tar) go to the [extracted area]usr/palm/applications/
copy the [game folder] inside it to your mobile
open filebox
copy(or cut) the [game folder] into home/user (one folder up from mydocs(your mobile storage folder)
close filebox
open X-terminal
cd [game folder]
sudo gainroot
preenv
desktopgen appinfo.json
you should get a can't execute [folder/file] or [file] message
type chmod +rwx [appfolder/folder/file] or [appfolder/file]
type deskt... again
go to your desktop
open options/add shortcut
you should be able to see the game's shortcut now
add it,have fun.