The Real Texas is an incredibly smart game, particularly in how it deals with large metaphysical ideas and conveys them to the player. The dialogue is well written and the humor is one of game's brightest aspects. Although not all of the ideas work out perfectly, this is certainly an experience that is hard to find anywhere else and is certainly worth trying out.
The developer of The Real Texas was hell-bent on creating an ode to classics, while missing perfection and consistency. The humor is lame enough to actually annoy you and graphically it fails to do anything special. That a few of the best games ever, like Zelda or Ultima, are used as a source of inspiration, doesn't turn this into a good game.