When comparing GRIN vs Marvel Super Heroes, the Slant community recommends Marvel Super Heroes for most people. In the question“What are the best tabletop RPGs?” Marvel Super Heroes is ranked 14th while GRIN is ranked 36th. The most important reason people chose Marvel Super Heroes is:
MSH has a quick and easy character generation process. Characters are created by rolling for origin, ability scores, powers, talents and deciding on a name. It usually takes less than 10 minutes and offers an impressive variety in characters created.
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Pros
Pro Zero dice required
GRIN uses a a standard deck of playing cards instead of dice.
Pro Narrative focus
With no intrusive dice or math players can focus on the story, with every action being resolved by the simple draw of a card.
Pro Creates excellent tension
GRIN uses a a standard deck of playing cards to create a fast paced and deadly feel that evokes modern horror films. One of the best horror games made, its ideal for Halloween or horror movie nights.
Pro Its great for single session games
Like any horror film, characters will die. Grin lends itself to deadly games and rally shines with 4-6 players and narrative arcs lasting 3-4 hours.
Pro Easy to improvise
With the intrinsic arc of a classic horror narrative built into the core mechanic, Grin can be an intuitive framework for improvised play.
Pro Unique mechanic
In true horror movie style, death becomes increasingly likely as the game's story moves irrevocably forward.
Pro Easy to pick up
The game has just one page of rules. It can be explained in a minute -- even to people who have no rpg experience.
Pro Random character generation is quick and allows for some truly memorable superheroes
MSH has a quick and easy character generation process. Characters are created by rolling for origin, ability scores, powers, talents and deciding on a name. It usually takes less than 10 minutes and offers an impressive variety in characters created.
Pro Designed to be beginner-friendly and narrative-focused
The game has a light ruleset that encourages roleplaying. Most conflicts are resolved with a percentage roll and a consulting table with the GM having a lot of flexibility due to rules being mostly just guidelines.
Pro Character advancement is optional
Pro Power Stunt mechanic encourages creative use of powers or abilities
(not available in the basic set)
Pro Karma system rewards heroic roleplaying
Karma is a resource used for character advancement and increasing chances in a conflict. It's gained by performing actions that a moral hero would perform.
Cons
Con Can be seen as too simple for some
Because each encounter has just two possible outcomes - success or death - there's little wiggle room in terms of roleplaying.
Con High level of randomness
Power balance between characters can be highly varied since all attributes are decided with a dice roll.
Con Designed with a single interpretation of a superhero in mind
MSH's karma system rewards ethical behaviour, as such anti-heroes like Deadpool or Punisher are almost impossible to play as.
Con Some of the karma system potential is lost
Karam system is used for 2 things in the game - advancing the character (getting new powers, abilities and raising ability scores) and improving character's rolls. Since most players tend to focus on advancing the character, the secondary function of the karma system is often wasted potential.