|For some reason, this makes me think of Chivalry & Sorcery|
I guess you could consider Renegade to now be the the "Try before you buy" category, as it has gone "pay what you want" at RPGNow.
Even if you aren't interested in another OSR clone, the adventure design tables and charts in the second half of the rules are worth the investment of bandwidth to download. It also includes random tables as a separate PDF as part of your purchase - encounters, events, foods, etc. If you like tables for inspiration, you have them here.
From the Blurb:
Renegade is ideal for anyone looking to start playing the world's most popular RPG with family and friends. This version of Gary Gygax and Dave Arnesons' rules translates instantly into other Old School RPGs and early versions of D&D.
The gameplay is fast and easy to learn, but Renegade is a complete system with all the spells, monsters and items needed to play for years. The game includes lots of support aimed at making life/ running games easier for new GMs.
The content is suitable for age 7+.
The following list outlines some of the options and content included in Renegade:
Lightweight rules that encourage improvisation and exploration
Classic and challenge-based experience (XP) options
A wide range of PC classes
Ascending and descending AC
Step-by-step support for rapid adventure and world building
A single-column layout suited to print or tablets
Optional skill challenges
Word/ OpenOffice class templates and quick start PC sheets included
Renegade has an expanded version called Renegade ~ Corruption with extra content.