Guide:Château Frontenac as Perpetual Motion Machine

Introduction

Château Frontenac is a Great Building that boosts quests rewards if the rewards are coins, supplies, Diamonds, Medals, or Goods.

Unbirthday Party is a Recurring Quest which asks you to pay an amount of coins and supplies to receive a Random Reward. The exact amount required depends on your era.

If you combine those two facts, you can "exploit" the game: if your Château Frontenac boosts coins and supplies rewards enough so that you get more as reward than you paid for the Unbirthday Party quest, then you can do that quest endlessly.

Required Château Levels

This is the formula used to count the needed level:

• R_s – small / reward;
• R_b – big / reward;
• P – amount of resource you need to pay.

	$\frac{280 \cdot P}{2 \cdot R_s + R_b} - 40$

The following table shows which level you need in every age:

Age	Château Level for coins	Château Level for supplies	Level (all)
BA	320	260	320
IA	80	80	80
EMA	127	127	127
HMA	160	160	160
LMA	110	140	140
CA	228	233	233
INA	276	210	276
PE	260	195	260
ME	278	205	278
PME	260	182	260
CE	226	190	226
TE	192	182	192
FE	224	260	260
AF	215	240	240
OF	377	415	415
VF	576	627	627
SAM	697	697	697

From Late Middle Ages on, you can have 2 recurring quests at a time, which lowers the required level (because you can use the supply/coin reward for fulfilling a supply/coin quest). From Contemporary Era on, you can even have 3 recurring quests, if you did all of the story quests so far. Story quests appear again, after acquiring certain sectors in the Continent Maps or after unlocking certain technologies. To calculate the required Chateau level with 2 or even 3 recurring quests is much more difficult. But empirically, it's safe to say that Level 150 is enough for Contemporary Era (with 3 quests), or for Tomorrow Era even lower.

Conclusion

The best strategy is to stay in Bronze Age till level 54 and then go on to the Iron Age, and level it to level 72. Then you will have so many FPs that you can easily level every Great Building you want, including Château Frontenac to level 116 to progress to Early Middle Ages.

Important hint: Don't go too far on the continental map! If you scout the Garrincton sector on the Industrial Age continental map (it looks like North America), you get a Bonus Quest line, which replaces one of the recurring quest givers. This is bad, especially when you are in Iron Age and only have one recurring quest giver, because you would need a technology from Industrial Age to finish the whole bonus quest line.

Other options

From Arctic Future and on, there are several "Gain Happiness Quests". You can do these with much lower levels of Chateau. Which level exactly you will need depends on the costs of the decoration you use.