When comparing Low Fantasy Gaming vs Icar, the Slant community recommends Low Fantasy Gaming for most people. In the question“What are the best tabletop RPGs?” Low Fantasy Gaming is ranked 40th while Icar is ranked 52nd. The most important reason people chose Low Fantasy Gaming is:
Light rules framework with emphasis on GM rulings
Ranked in these QuestionsQuestion Ranking
Pros
Pro Rules Light
Light rules framework with emphasis on GM rulings
Pro Dark & Dangerous Magic
Every time a spell is used, the caster must test for a Dark & Dangerous Magic effect.
Pro Open World Gaming
Specific rules to support open world/sandbox/episodic adventures, including Party Retreat & Chase rules, and random encounter tables based on location rather than level.
Pro Free PDF book
Free PDF download at the link: https://lowfantasygaming.com/
Pro Fast, Gritty Combat
Quick and engaging combat with martial exploits and injuries & setbacks when reduced to zero hp (assuming not dead)
Pro Super strategic hand to hand combat and piloting rules
Cons
Con Not a new Low Fantasy Setting itself
The free LFG PDF is a rules system for use with your favourite low magic setting, not a new low fantasy setting itself.