Roaming has become a popular addition to the metagame strategy, wherein one player does not lane nor jungle, but rather simply moves through the jungle/river to initiate ganks on lanes from level 1 and onward, until the teamfight portion of the game begins.
A roamer essentially guarantees that you're either running a solo lane, or two solo lanes if you have a roamer and a jungler. I've also seen a double roamer game played, though this tends to be less effective as enemies who are wise start playing defensively and reduce the effectiveness of your roamers, which put them behind in both CS and levels.
The qualities of a roamer can vary, but the general requirements are that they are mobile, can do burst damage, and have a strong stun or position altering (push, throw, etc.) ability. Taric, Evelynn and Alistar are all very popular choices for roaming. I've also seen Sion and Blitz play roaming effectively, but they were both out of a lack of a jungle spot on the team and normally suit better in a lane.
This strategy is similar to the "double jungle" mindset in that you get three solo lanes, with the exception that there is extra pressure on getting early kills to succeed. A definite risk vs. reward tossup, as successful roamers will quickly catapult your laners ahead in level / CS as well as demoralize your opponents, but unsuccessful roamers will fall just as far behind due to the lack of their presence in the laning phase.
General
- Custom games are only worth 75% of the IP you would have earned in a normal game.
- Co-op vs. AI games incur penalties based on summoner level and difficulty:
- Level 10-19: Beginner games are worth 85%.
- Level 20-29
- Beginner games are worth 70%.
- Intermediate games are worth 90%.
- Level 30
- Beginner games are worth 55%.
- Intermediate games are worth 80%.
Win
- 2.305 IP per minute up until 55 minutes.
- 18 IP bonus for completing a match (~7.8 minutes worth of IP)
Loss
- 1.402 IP per minute up until 55 minutes.
- 16 IP bonus for completing a match (~11.4 minutes worth of IP)
Graph
Optimum Game Length
Riot Games has designed their IP system to reward playing the game to completion and to reward longer games:
Q: Will I be getting more or less IP and XP as a result of this change?
A: While you will get more or less in some games, the average XP/IP gain will be much more consistent. If you typically played very long games, you will tend to get more IP and XP; however, if you typically play short games, you will get slightly less IP and XP.
While you do get a bonus beyond the "per minute IP", that bonus is designed to compensate players for the time between matches:
Q: It seems unfair that I spend 5 minutes milling around in queue and in champion select, and don't get an IP/XP reward for that. Does this system help with this at all?
A: Actually, it does! All game types give a slight 'completion bonus' that is equivalent to several minutes of play. This is embedded in IP you earn.
That being said: provided you could get into another game in substantially less that 7.8 minutes, you'd make out slightly better by surrendering and starting a new game. You'd have to do this a lot to see a substantial gain, however. If it took you longer to get into the next game, you'd actually incur a loss overall.
In short, it'll usually be best to play to 55 minutes, then bail out if you're very likely to lose. At that point, you're essentially playing to see if you'll get 145 IP vs 94 IP. If losing seems like a foregone conclusion, then you're mostly playing for the experience at that point.
Sources
- Items in the general section: League of Legends @ Wikia
- Win/Loss Accrual Rates: Based on recorded values after the completion of games. There are some instances where (rate * minutes) does not exactly equal what I recorded from the game client when you round up, but overall the above rates serve as a good enough rule of thumb for my purposes.
- IP System FAQs
Reference
Best Answer
Short answer: No
Long Answer: At one time, Turrets used to gain attack damage and attack speed for each allied champion near the tower, but this is no longer the case.
Turrets do gain attack damage as time elapses, and they do gain armor if there are no minions around (this is to discourage backdooring), but these happen regardless of the number of players connected to the game.
Additionally, Turrets lose armor and magic resistance as time elapses. This is to encourage quicker overall games.