this record is ancient
i got new record and still going

Level 18 thousand balls?

Wow

1.0e+WHAT

Actual playing strategy:
Saving for 100 rubies, spending 10 on meta energy converter (I don't want to reset), an the other 90 an gravity + 50%.

---> I got the slight feeling that the game numbers start to raise exponentially.

---> I never really dove into bubbles, are they still worth the effort in late game?

---> Big question: In weak moments, I'm tending to spend the 99$ for 3000 rubies, just to invest every thing in gravity +50% bonuses.
I could buy 33 * 50 = +1650% gravity boost,
Together with my +200% I have, this would get me a total of +1850%
This would boost my gravity to 72.89 * 19,50 = 1421 !
But honestly, I don't like pay to win, and 100 bucks is quite expensive just for fun but I'd like to see the result.

Abilities settings:
Tube 1, Amplifier Auto upgrade Level ~530 (max possible), Mass auto jump 100% (Level 5)
Tube 2-4, Amplifier Auto upgrade Level ~538 (max)
Tube 5&6, Mass powerful bounce, Level ~538 (max)

The tubes 1-4 are launched that every 1.5 minutes one tube triggers (6 minutes trigger time in total).
The tubes 5-6 are launched every 1.1 minutes, (2.2 minutes trigger time)

When the tubes are working correctly, I get 5000-8000 meta per run of 4-6 hours.
I'm playing in background while working on the PC, but there is not much to do then Improving the tubes.

My Meta-Energy settings:

Auto-Capacity extender: 1.29 * 10^3
Bounce: x 4.10 * 10^3 (a bit high, but OK), pushed by +100% (first buyer bonus), giving x 8.19 * 10^3
Density: x 1.07 * 10^9
Gravity: x 72.89 (pushed with Rubies +200% ( I also spent the 3$ first buyer) ), giving x 218.67 in total
Bubble prob: base value
Bubble spikes: removed
Bubble initial cap. base value
Idle bonus multiplier: x 1.37 * 10^6
Idle mult. time: 24 hours (adding me 10^160 at max, don't know if still useful, since I gain 2000-4000 meta on idle for 12 to 18 hours.)
Energy generator: Base values, You're completely right, waste of resources beyond 10^100000 energy

No events bonus.

Thank you very much for the long replies and the detailed information.
I was very useful and easily understandable.
I glad to see that there are still other people playing idle Bouncer.

So here's my configuration:

Energy Level 10^1.2 million
Active game time: 940 hours
Max days in a row: 206
Days played in a row: 96 (I fucked it up somehow 3 months ago)
Money spent: 3€ (or the like, it was the first buyer bonus)

Achievements:

Super Bouncer 13: next level: 478 million bounces. Well I let them bounce on min height for about 5 days, giving this huge amount.
Energy storage: 21, next level: more than 2 million
Bubble buster: 11, I clicked like an idiot on a boring night shift, with a +8% bubble prob. daily bonus.

This screenshot is quite old. I'm current at 1.2e+155151. I tried a lot of things over the years but what I've come to find is that in the beginning active play and clicking on bubbles is the fastest way to progress. I'm assuming you've already got the initial part of the game out of the way where you've removed the spikes and have your auto capacity extender at at least 100%. Once you're past that you're in the mid game and you can choose one of two playstyles. Active Play levels you up faster but Passive Play is obviously less time consuming. In the end game there is only Passive Play so if you active play you will eventually have to transition over but it's not incredibly painful.

ACTIVE PLAY:
If you go this route just pour all of your points into Bubble Probability at the beginning. The value of the bubbles doesn't matter you just want a lot of them. Once you get to 5 or 6% you can stop, but you want a lot of bubbles to drive your Bubble Buster achievement. Now just click on all the bubbles and upgrade Bubble Initial Capacity and Density for the most part. Bubbles will be worth hundreds or thousands of times as much as your pipes and you'll progress quickly.