The problem there is that you're using a Mac.
My first pc was an apple 2 (I don't count the TI) - no way was I going for the Charlie Chaplin PC Jr (and the office PC was way too expensive).
Some time much later I was in a brick and mortar (Egghead) looking for a game (in the olden days there was no pricewatch, you physically found a game, played it and then got another one).
In the store there were two shelves of some Apple 2 stuff. Boxes faces forward for easy inspection. There was about 30 boxes altogether but in addition to games the shelf also included a lot of productivity stuff like paint programs, a dozen different word processors, screen savors and clip art programs. Yep, the stone and chisel days my friends. In any event I studied the boxes and finally picked my game for my apple 2 (?) and as I was walking to the counter my eyes looked across the store and scanned the PC section. I walked over there.
For some reason the subsequent growth of the PC completely escaped me. While I was unhappy with apple for abandoning the apple 2 for the Mac, the Mac wasn't an option because there just weren't too many games for that computer. In the beginning Jobs wanted the Mac to be a business computer not a gaming toy. But as I scanned the aisles (not shelves) of PC stuff, I just couldn't believe it. There were shelves of PC games. And the adventure games had its own section. Now admittedly some of the PC games were older but I certainly hadn't played any of 'em.
I wasn't jealous. I wasn't envious. I wasn't mad. I was in my apple 2 world playing apple 2 games. I even belonged to an apple 2 club that met once a month in Los Angeles and had maybe 200 people attending. But I was closed off. Without much apple support the 2 was dying out. But when I saw the PC gaming section in the store I got excited. I put the apple 2 game back on the shelf and decided I better start saving for my next PC.
Curiously, a similar phenomena is going on in gaming stores today with PC games. Now I see there are only a couple shelves for PC stuff and most of the store is devoted to consoles. However, unlike the days of old when apple 2 games were disappearing, today it's just a matter of PC games not disappearing but being distributed digitally.
speaking of digital downloads
dungeon of the endless is available at Amazon download for $7.99
http://www.amazon.com/gp/product/B00QIZO200/ref=s9_acsd_ri_bw_rw_DVGHPBS_p4_t?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=merchandised-search-7&pf_rd_r=10JFPEXXT43JRTRB65ZR&pf_rd_t=101&pf_rd_p=1902363502&pf_rd_i=2445220011
I like Amazon because many of the games allow you to either download directly or take a key and put it on Steam.