What game can you drop a level appropriate random solo monster at range in a area with no terrain against a party with ranged characters that will be challenging? Oh and not just a party with ranged characters, but ranged characters that you have given items that allow them to bypass the resistance or DR of monsters. I am not talking about a specific monster, but an average monster for that game, dropped in an open area at range, that is not specialized to deal directly with that situation? Cause that is the complaint
Two systems where this won't cause an issue are 4e and Marvel Heroic RP. (I guess if the monster is "utterly" random - eg has equal chances of being a slow-moving melee-only bruiser as one with a bit of mobility - but I was replying to "brainless sack of hit points", not "random solo monster".)
4e, this is what happened when the PCs were attacked by a black dragon around 4th level. They took a few ranged shots as it closed, but once it got into melee with them (they were holding their position because it had cover) it was a challenging fight.
The
hydra across an underground river would be another example - that was around 18th level. This scenario involved terrain, but the terrain was not cover for the hydra - it was terrain (river, lava, etc) that made it hard for the players to close with the creature.
Marvel Heroic: the mechanics are
very different from D&D and similar games; but it would have no trouble with this scenario. When
Titanium Man closed in on my group, War Machine engaged him while the other PCs entered the Smithsonian, and Titanium Man ended up winning the firefight between the two, sending War Machine falling to earth over Florida while Titanium Man escaped to his secret base in Khazakstan.
The issues being discussed in this thread are results of distinctive features of 5e design: its action economy (eg rate at which archers can shoot vs distance at which they can shoot vs rate at which creatures can close) and its monster design (eg many melee-only creatures). Other systems have different action economies (even radically different, as in MHRP) and/or different approaches to NPC/monster design (eg 4e).