Use Rammus's high mobility and taunt to punish Gragas's slower clear and medium early pressure by targeting overextended lanes.
Avoid extended fights and full clears against Gragas, focusing instead on three or four camp clears toward lanes with priority to offset Gragas's objective control.
Prioritize ganks and cross-map plays over direct jungle fights to leverage Rammus's scaling and gank threat against Gragas's medium dueling and disengage.
Jungle Plan
Path toward lanes with AD-heavy carries to maximize taunt value and punish Gragas's medium dueling power.
Fight for river control and Scuttle only when allied lanes can support to deny Gragas's objective setups.
Use cross-map ganks to apply pressure and force Gragas into defensive pathing, avoiding direct early jungle fights where his (E) and (R) can disrupt engages.
Danger windows
Beware of Gragas's level 3 power spike when (E) stun and (W) damage reduction enable strong burst trades.
Avoid isolated river fights where Gragas can use (R) to displace and separate you from teammates.
Be cautious contesting objectives early if Gragas holds flank angles and has (R) available to disrupt smite fights.
Early game
Start with a three or four-camp clear aiming to reach level 3 quickly and gank lanes where (E) is on cooldown.
Contest first Scuttle Crab only if nearby lanes have priority to avoid losing tempo to Gragas's disengage and displacement.
Ward defensively against Gragas's potential early invades and avoid fighting when his (E) and (R) are available for counter-engage.
Power spikes
At level 6, respect (R) displacement by avoiding forced engages and instead look to punish its cooldown with taunt ganks.
Exploit Rammus's scaling armor and taunt value against Gragas's medium scaling and burst build by forcing fights post-level 6.
Use Rammus's (Q) and (E) early to capitalize on Gragas's cooldown windows before he completes his first AP or tank item.
Win conditions
Convert early gank pressure into dragon and Rift Herald control by securing vision and forcing Gragas onto the back foot.
Use Rammus's superior scaling and taunt lockdown to deny Gragas's carries and create pick opportunities in teamfights.
Counter-jungle effectively around mid-game when Gragas's cooldowns are down, leveraging Rammus's mobility to snowball lanes and objectives.
Tip: For Rammus vs Gragas, read overview, trading pattern, and danger windows first for a fast Jungle lane check.
