This is a review for an 'old' game - the Midnight at the Well of Souls RPG was written by Timothy Green and published in 1985 by TAG industries. It is based on the Well of Souls books by Jack Chalker.
For anyone not familiar with it, the series centers around the Well World, a planet built by an alien race that constructed much of the universe as a testing ground; each hex of the well world is a template for a different
alien planet. Visitors are 'processed' by the computer and end up reassigned to new species (the RPG includes a random table for this purpose).
This gives you the general idea...(edit: OK that's not entirely true - I just found the comic entertaining, but maybe you'd have to have read the original books).
The game includes a core rulebook, character sheet, intro adventure and reference tables. Character stats (STR, CON, DEX, INT, Willpower), are rolled on 4d6, with a couple of derived statistics; age is rolled on 2d10+20, with [AGE+INT] referenced on a table to give initial skill points to distribute - a 26 total gives 229 points, a 64 gives 417). A character also (a bit redundantly) chooses three skills as 'personal areas of expertise', getting an extra +10 with these.
There are about 50 skills and skill improvement works much like BRP (use a skill successfully during the adventure, you get to roll against it and if you fail, gain +d4%); a character can also be taught or self-trained in skills.
Each skill has specific ability notes associated with it, like damage bonuses for good Unarmed skill, Initiative bonuses for a high Tactics skill, or very high Mathematics potentially giving a character the ability to learn how to contact and annoy the central computer. Each skill has a separate base value which could be fixed (05, 10) or equal to an attribute. Designers' notes at the start comment that the game intentionally leaves out 'roleplaying' skills including diplomacy, bargaining, streetwise etc.
The combat system is reasonable straightforward, with characters announcing intended actions before initiative, and movement handled in a separate step before ranged attacks or melee attacks (though moving characters may be subject to 'opportunity fire' from ranged weapons). Initiative is modified by DEX and weapon used. Damage is divided into 'Fatigue' and 'Endurance' damage; normal attacks deal 'Fatigue' damage while a roll by 20+ deals half END damage, and a roll 40+ below the required number deals double END damage instead of fatigue.
Endurance is based off STR and CON, using the endurance table; Armour absorbs damage (which eventually degrades it). There are also rules for poison, disease and exposure.
The rules next include some history of the setting and equipment lists, as well as space travel rules, 11 pages of random planetary system generation tables, and so on, which are perhaps more in keeping with a generic SF game (not being well world specific). The into page notes that these rules are from another tri-tac game, FTL:2448 game. There are starship weapons/armour damage rules, though little specific info on starship combat procedure (manuevering, etc.).
The Well World section includes notes on the planet and notes that natives'
are a better choice for PCs, since otherwise characters would likely be scattered across the planet when they visit (incoming travellers, as noted, get a randomly assigned race).
The book includes a number of races, each of which gets a multiplier to the base attributes (0.5 to 1.5) and occasionally special abilities. The race descriptions fill another 47 pages, I expect including a lot of fleshing out by the author. There's also an index
A separate Intro adventure is included, which is again not specifically set on the Well World, being set up as a training adventure where the PCs are hired to check out deposits of 'communications crystal' on another planet; it includes pregenerated PCs and some maps and encounters.
Overall the rules system appears quite solid and playable, and relatively straightford. As a resource there isn't a great deal of guidance for a Well World game, although information on races etc. would be useful.