Sigma Theory Cheats, Codes, Hints and Walkthroughs for PC Games.

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  Hints and Tips for: Sigma Theory 
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 Sigma Theory Cheats

Sigma Theory

Cheat Codes:
Submitted by: David K.

Beginner's Guide:
Written by PathFinder

Sigma Theory, is a game where the end goal is to obtain the ultimate technology 
that will unlock the singularity. You do this by having scientist work on projects. 
The more scientists you have working, the more work towards this goal gets 
accomplished. You get scientist by using your agents to Abduct, Seduce, Bribe or 
Convert them. Each agent comes with a set of abilities and stats. When you unlock 
a technology you can sometimes apply this to the agents to give them better stats
 or an ability.

When first starting playing you'll only be able to recruit from a limited number 
of agents. As you play you will unlock other agents to use in future games and/or 
if you lose an agent. When you lose an agent you will often be granted a randomly 
selected agent to recruit. You need to the best one of three answers to 
successfully recruit an agent. If you fail too many times the game will randomly 
select four agents from the pool. Read the agents profiles, analyze what motivates 
them and try to pick the best answer that matches that. In future games, 
if you've already successfully recruited the agent they will be recruited without 

There's several selections of four agents that will work. You want at least one 
hacker, one spy catcher, one seducer/negotiator and one elite agent. You only get 
to pick one elite agent so make a it a good one. I like the woman who is a black 
belt and is an expert at exfiltration. Black belts usually do the best when 
extracting scientist from high risk missions and being an expert at getting away 
is also going to go a long way towards success.

There's a few important things to do early on that will make the rest of the game 
much easier than it would otherwise be. You want to lower the alert levels, gain 
intelligence on rival sigma heads and locate scientist to recruit. You'll want to 
maintain good relations with the other sigma heads but not at the expense of your 

Groups will ask you for help and if you betray them you'll probably lose agents so 
when a rival sigma head asks so don't. 

Error on the side of keeping the doomsday clock from advancing because if it reaches 
zero it's game over. I've never lost by a rival sigma head winning. It's almost always 
the doomsday clock.

Use your hacker(s) to lower the alert levels. Any agent can do hacking and this uses 
their int stat. Don't try to hack with agents that have a low intellect. It's better 
to use high strength agents to recon, infiltrate and counter enemy agents. If you 
don't yet have a good spy hunter unlocked use a high strength agent to counter 
instead of capture agents. Elite agents are usually the most successful spy hunters. 
The elite spy hunter is something you'll need to unlock.

When deciding if you are ready to begin recruiting scientist consider the alert 
levels and agents available for risky exfilration missions. That is missions where 
the alert level is 50% or higher. You don't want to use your non-elite seducer 
agents for high risk missions. They will most likely be killed or captured. This 
is why having a good hacker to lower alert levels is a big help. Just about any 
agent will do for exfilration missions when the alert level is zero.

In negotiations with rival sigma heads, getting intel on them is important. 
Otherwise it's just a guessing game about what to ask. It's also nice to have 
something to leverage over them like having a surveillance drone there or installing 
randsom ware. Early-on you want to improve relationships as much as possible. 
This avoids the possibility of a starting a war and the doomsday counter reaching 
zero. War causes it to tick down to zero faster.

When choosing what to do with technology, I usually error on the side of whatever 
moves the doomsday clock back or helps the agents get better at their job. Sometimes 
if relationships are low it's better to pick that option instead.

Towards the end of the game you'll mainly be recruiting scientist and try to defend 
against enemy agents. Several countries will be out of the race and their scientists 
are easily obtained by any agent. Just try to keep that doomdsay clock from reaching 
zero and try to keep your rivals from getting your scientists. If capturing agents 
isn't working try countering them. It sends them away for several turns.

Keep in mind this game is in Early Access at the time of writing this little guide. 
Games evolve over time. I expect the Sigma Theory will be developed to be a much 
more interesting and challenging game in the future.

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