yep, in fact I use it stand alone as well on 3.6.8.
Since you are NOT using an existing points system, you will need to do the following:
Admincp -- Maintenance -- Execute SQL query.
Change 'user' to 'tableprefix_user' if you need to.
Code:
ALTER TABLE `user` ADD `points` INT( 10 ) DEFAULT '0' NOT NULL ;
Then just follow the instructions. Ignore any version issues that you get. If you have trouble - hit me up on aim.