EftV is not only a fun little game but also offers everything one needs to create her/his own single player dungeon crawler, rouge-like, hack&slash game. Albeit, it is a bit of a hassle at times and comes with an appropriate steep learning curve. You can use EUO's Maped to create new dungeons and realms. And in the end you can create your own tile and sprite templates, add various new material tints as well as items, monsters etc.. - all this without the knowledge of coding. If you want to dig deeper into the realms of programming, EftV like EUO supports LUA scripting with a large API to chooce functions from. Only the allegro engine and the C++ code cannot be tinkered with, but then again there is likely no need for this as there are already a lot of features implemented.
One note on Maped in conjunction with EftV: the first few levels of EftV are randomly created by scripts found in ..\scripts.maps\ These scripts are also loaded by Maped and eventually overwrite your own maps. Best is to play around with level numbers above 014 or so.
So in a nutshell: Thanks egg for releasing such a powerful tool and keeping it updated!
Btw, this reminds me a bit of the game Schleichfahrt or Archimedean Dynasty as it was called in the english speaking world. This game let you tinker with mostly every setting ranging from ammunition stats to submarines mechanics using a text editor - I think this is/was pretty uncommon for any game. Even prior in the dark ages of DOS I used to open every game file with EDLIN or EDIT with mostly no success. Never really got around hacking stuff with an hex editor though