Greetings adventurers!
It's Fighting Fantasy meets Star Trek this time round.
You are the captain of the starship "Traveller". After a manoeuvre goes disastrously wrong, your starship is sucked into the notorious black hole "Seltsian Void".
You regain consciousness to discover that your starship has passed thru the black hole into an unknown parallel universe.
You must travel this alien world and search for info that can help you lead your crew safely back home to earth, via another black hole.

As well as rolling your own skill, stamina and luck stats, you have a crew who each have individual skill and stamina scores and specialist skills. Your starship also has weapons & shields scores.
In addition to the traditional hand-to-hand combat system, there are rules for phaser battles (quick & deadly) and ship-to-ship battles.
It takes a while to setup all of these stats which makes it all the more bizarre because, if you follow the perfect route to complete the game, you will face no battles and no skill tests or luck tests in your entire journey.
(Remember that bit at the start of all FF books which states that, if you find the optimum route, you can still triumph even if you have low stats? How we all laugh at that bit, but this time it's really true.)
However, if you wanna complete all of the Steam achievements, you will need some of these stats.

The game seems very short if you follow the optimum route, but then the original book was only 340 references, not the usual 400.

There are 27 artworks in the gallery. Some of these are found during the winning walkthru and are marked in bold type where they occur. The remainder require different routes and are described in a separate chapter at the end of this guide.

I have also provided a walkthru for the original "standalone" version of this game on the respective page for those who are interested.
https://steamproxy.net/sharedfiles/filedetails/?id=2163940549

There are seven Steam achievements for this title.
Three are self-explanatory: Free-read win, Adventurer win & Hardcore Hero win. Simply follow this guide to complete the quest in each mode.
None of the other four achievements are completed during the main walkthru. They are unlocked as follows:

Manic Miners:
At the start of the game turn to starboard towards the barren system. Then, investigate the small asteroid cluster. Risk sending one of your crew. (Choose the one with the lowest stats.)
* Roll 1d6:
1: Roll 1d6 again: 1-3: Continue as if you had rolled 2-5 above. 4-6: Success!
2-5: Choose asteroid #1. Roll 1d6 again: 1: They are killed by an asteroid. Choose another crew member and try again at *. 2-6: Success!
6: They are killed by an asteroid. Choose another crew member and try again at *.

Alien For Hire!:
At the start of the game turn to starboard towards the barren system. Then, continue as you are. Hook into an auxiliary power source. Choose -3 shields.
Roll 2d6: </=shields score: -1 shields, >shields score: -2 shields, double 6: -5 shields
Go to battle stations.
Defeat enemy ship We: 8, Sh: 7
Beam down to search for deposits. Choose both security guards.
Choose security guard with lowest skill.
Take a sample of yellow mineral powder.
Beam up. Set course for the double star.
Call for a sedative.
Roll 1d6: 1-4: ok, 5-6: your other security guard -3 sta
Medical Officer's skill test. (You must roll below her skill score to pass this skill test.)
Pass: ok, Fail: security guard dies.
Head towards the double star.
Take up her offer and beam down.
Ask to see the city. Explore the city further. You are determined to go on.
Win phaser fight against scavenger: Sk 8. (You fire first.)
Allow the female Macommonian (Aluniya) to join your crew. (Sk 9 St 12, inflicts 3 sta damage)
(To rejoin the main walkthru at **, head into deep space towards the radio signal source. You can still complete the mission from here.)

Let Them Die:
Follow the main walkthru until you reach the grey planet. When the crew return to the ship, instead of sealing off the docking bay, jettison the recon plane.

Bar Brawler:
(You can only unlock this achievement if you still have all six of your first-choice crew: Science Officer, Medical Officer, Engineering Officer, Security Officer & both Security Guards.
If you do this achievement in the same playthru as "Alien For Hire!" you can trade the yellow mineral powder, rather than crew members, for entry to the Laur-Jamil space port.
Unfortunately Aluniya,the Macommonian guard, cannot contribute to the bar-brawl as she won't enter the space port. A real pity, as she would have been extremely helpful here.)

Follow the main walkthru until you pass the planet Malini but then investigate the large, wheel-shaped structure instead of the black planet.
Attempt to bargain.
Offer the yellow mineral powder, if you have it.
Otherwise, roll 1d6 for each crew member. 1-5: ok, 6: lose crew member
Ask whether there are recreation facilities. Invite the crew.
You and every crew member must each defeat an alien: Sk 6-8, St 4-7
(You can use luck tests to help your crew members, as well as in your own combat. It doesn't matter if you run down your luck score as there are no more luck tests after this point anyway.)

This is a map of the parallel universe.
The red lines mark the route for the winning walkthru.
The pink lines mark the variations from the optimum route required to complete the remaining four Steam achievements. The pink asterisks mark the approximate locations of these.

Artwork #1
Press on towards the life-bearing system ahead.

(This planet has not been named by it's inhabitants.)
Leave orbit and continue onwards.

(This planet is Trax.)
Plot a course to avoid it.

(This planet is Culematter.)
Press onwards.

**
(If you have made a detour to complete the steam achievements "Manic Miners" & "Alien For Hire!", you will rejoin the main walkthru here.)

(This planet is Cliba.)
Leave orbit and continue onwards.

Investigate the small grey planet. (Do not miss this choice! This planet is not important, but the next one is and because of the game layout you cannot reach it unless you visit this grey planet first.)
Artwork #15
Return to the ship.
Seal off the docking bay.
Evacuate the air from all the affected sections.

Head to a blue planet.
(This blue planet is Jolsen-3.)
Beam down and visit this planet.
Artwork #12
Accept I-Abail's offer of refreshments.
Artwork #24
Follow this path thru the maze:
Right (312) Left (20) Right (113) Left (192) Right (293) Left (322) Right (214) Left (318).
Step off the path. (232)
+ info: black hole in sector 159

Continue into deep space.
Continue onwards.

(This planet is Malini.) Ignore this planet and continue on your journey.

Hyperspace jump to the small black planet.
Ignore this planet and proceed towards another.

(This greeny-grey planet is Terryal-6.)
Artwork #3
Beam down. (Choose any selection of crew. It doesn't matter.)
Beam down.
Follow the child
Follow up this option.
+ info: stardate 21
Honour your agreement with Luff.

I believe i have found the coordinates.
Black hole at sector 159.
Black hole at stardate 21.
159 - 21 = 138.
Artwork #22

You have brought the "Traveller" and your crew safely back home. Yay!

There are 27 artworks in the gallery for this game.
A few are found during the winning walkthru, described above, and are marked in bold type where they occur: Artwork #1 #3 #12 #15 #22 #24
The remainder require different routes and are unlocked as follows.
(I have grouped artworks together in this list, as they appear in the game, for convenience.)

#16 At the start of the game, head for the life-bearing system to port.

#21 At the start of the game, head for the barren system to starboard.
Investigate an asteroid cluster. Risk sending out a crew member.
#14 At the start of the game, head for the barren system to starboard.
Continue. Auxiliary power. Choose -3 shields.
Survive a single shot from each of four missiles. Battle stations.
#9 Continue from #14. Defeat enemy ship We: 8, Sh: 7
Beam down to explore the barren planet. Explore the ravine.
#20 Continue from #9. Beam up. Set course for the double star. Head to the canteen.
#23 Continue from #20. Resolve the situation with the ensign however you wish. Head towards the double star.
#10 Continue from #23. Beam down. Ask to see the city. Explore the city further. Continue despite her protests.
#2 Continue from #23. Beam down. Speak to the department of astronomy. Hand over your weapon.

#11 At the start of the game, head for the life-bearing system ahead. Beam down.

#19 Follow the main walkthru until you reach the planet Trax but, instead of avoiding it, investigate it and then beam down.

#8 Follow the walkthru until you reach the planet Culematter but, instead of avoiding it, investigate it and then beam down.

#26 Follow the main walkthru until you reach the planet Trax but, instead of plotting a course to avoid it, continue to investigate it and then leave orbit and continue without beaming down. Set course for the star cluster.
#18 Continue from #26. Activate shields!
Survive a single impact each, from up to 18 meteors. (Strength 7, Total 18)
Set course for the blue planet. Beam down. (You die!)
#17 Continue as in #18 but, set course for the green planet rather than the blue planet. Beam down.
#13 Continue from #17. Draw your phasers. Wait to see what happens. Start gathering vegetation.

#4 Follow the main walkthru until you reach the planet Cliba but, instead of avoiding it, investigate it and then beam down. (This artwork doesn't seem to appear in my gallery, even tho i have been to this location several times. Possibly a game bug?)
#27 Continue from #4. Wait for the aliens to arrive. Ask about the planet. Try to contact the Rain Lord. Continue up to the gate and talk to the guard.

#5 Follow the main walkthru until you leave Cliba but, ignore the small grey planet and continue to your original destination. Beam down.

#6 Follow the main walkthru until you leave Jolsen-3 but, instead of heading into deep space, head for the small yellow planet. Beam down.

#7 Follow the main walkthru until you go past the planet Mailini but, instead of heading for the black planet, set course for the wheel-shaped structure. Bargain with them. Accept their offer. Agree to the deal and dock.
#25 Continue from #7. Are there any recreational facilities here? Invite the crew. Beam down.