The first software I got for my A2000 was Dpaint 2. The second software I got was a Fred Fish disk with Moria on it. It was shareware, wonderful and I still play it. Fish Disks are wonderful shareware, freeware and demoware programs. For instance you got a C compiler with source code, two disks (76 & 77) were a programming language called Draco complete with examples and compiler etc! You got modem software, paint programs, games and so forth. I think there is an index here:
http://www.funet.fi/pub/amiga/fish/and from Wikipedia:
"Fred Fish is a computer programmer notable for work on the GNU Debugger, as well as his series of Fish disks of freeware for the Amiga. There was a pioneering spirit pervasive in the Amiga community in the early days. The Fish Disks (term coined by Perry Kivolowitz at a Jersey Amiga User Group meeting) became the first national rallying point, a sort of early postal system. Fred would get his disks off around the world in time for regional and local user group meetings who in turn duplicated them for local consumption. Typically, only the cost of materials changed hands. In the Fish Disk series, you can chart the progress of growth in sophistication in Amiga software as well as see many groundbreaking trends emerge that are familiar to the post-Amiga world we now know."
I have numerous disks from the old Amiga store nearby and whenever I have to reformat a HD I invaribly end up digging out some Fish disks for games and such to fill in the spaces. Try going thru them and pick out a few that look interesting. A heck of a lot of those progs were useless to me as they are ports of text editors and other programming tools, but many of the games were early versions of commercial games. Have fun!