Here's another one I've been working on for a while: a cover for "Tripartite Alliance Earth", a world of the ITA (Interdimensional Transit Authority) created by Randy McDonald (website here
http://rfmcdpei.livejournal.com/)
This is a broadly "convergent" TL: although divergences begin with the end-of-the-Napoleonic wars negotiations, the general progress of History is fairly similar, with Germany rising under Prussian leadership, the UK grabbing stuff all over, and the US expanding to the west coast, while in the 20th century there is a WWI in the wake of which a Russian Soviet state arises, and a WWII in which Germany plays a leading role.
However, details differ. South America did better at modernizing and industrializing, especially after 1900. The US has a rougher time with its internal politics from the late 19th century on, the end of Napoleon III sees France move back to (constitutional) monarchy, Britain has a bit less success in the colonial game and the French a bit more, Hitler is a blond with an eyepatch [1]

and Egypt manages to avoid falling under European dominance. Japan is never allied to Germany, and the US never gets involved in WWII in Europe (where Germany still goes down, although at the cost of even more Russian casualties), instead fighting a limited-scope war with Japan in which Japan loses its continental holdings and has to pay through the nose reparations-wise, but holds onto Taiwan and avoids direct occupation.
Things really diverge sharply after WWII, with the US becoming increasingly authoritarian and internally divided, and the Soviets have a civil war in the 60s, leading to the establishment of a separate hard-line regime east of the Urals and a more moderate one in the European parts. (A band-aid in the form of an all-SSRs Union was created, but there essentially were two Soviet Unions) Come 1981, tensions rose between a US-backed block of right-wing SE Asian regimes and the hardline communist alliance of China and Soviet Siberia (may include central Asians, and nuts): things were not helped at all by the US was led by a truly rabid anti-communist by the name of Elizabeth Chang, a high functioning sociopath with the less pleasant attributes of Trump and Sarah Palin carefully covered with a veneer of respectability and a belief in the value of military tension as a means of enforcing control at home.
In 1982, the balloon went up, and before long nukes began to fly. The war spread to the European part of the USSR and India, and when President Chang found herself facing impeachment, launched a final damn-the-torpedoes attack on China and Siberia, although not before threatening to attack other major powers that did not aid the US in the Defeat of Communism, and actually launched a spray of missiles at Europe and Japan after they told her to (albeit more politely) get stuffed. (Fortunately, this TL was rather more advanced than our own at this point, and the existence of pretty high-quality space and ground based anti-missile systems meant Japan lost only 4 million people and Europe less.) Similarly, these anti-missile systems meant results were merely horrible rather than entirely unspeakable, and human civilization did not die out in the northern hemisphere.
Postwar, thanks to a low-level nuclear winter combined with the collapse of international trade for a while, much of the globe is devastated by famine where it has not been already devastated by bombs and fallout. Tens of millions of refugees are on the move. A new international order emerges under the leadership of the League of Nations (a more successful organization than OTL) and three major powers, or the Tripartite Alliance: the European Confederation (already a more centralized union than OTL's EU, and becoming more so as a result of the struggles to deal with the post WWIII horrors), the South American Community (a looser grouping, but largely untouched by WWIII), and the Empire of Japan. All three absorb huge numbers of refugees, which in the case of Japan proves rather socially disruptive, but in the long run allows it to avoid the demographic quagmire OTL Japan is mired in. Huge areas of devastated Eurasia are taken over by international forces under the aegis of the League of Nations. A number of nations, Japan in particular, do some non-league-of-Nations-approved expanding, but under the circumstances nobody really objects that much. The northern two thirds of Africa, much of which as OTL had become dependent on imports of food, fuel, etc., is particularly hard hit by famines, and suffers from a considerable population shrinkage in spite of not being hit by bomb one (however, the horrors of the post-war status actually help consolidate African states in the long run: massive population movements have mixed together and homogenized populations, and smaller language groups and ethnicities have diminished in importance in comparison with state-wide common languages).
Although some of the charred edge bits of the USA were taken over by other states, much of the US remained unoccupied by the League or anyone else, as the US civil war triggered by President Chang's refusal to step down slowly dragged on. It would not finally come to an end until Tripartite Alliance world is contacted in 1998 by the multi-timeline association known as the Interdimensional Transit Authority (ITA). After the initial failed effort at a takeover by ITA Bad Boy Holy Alliance World (The Tsar-Emperor is supreme on three continents), a more beneficial relationship was established, and an end was brought to the US civil war with a combination of carrots and (rather large) sticks. Remaining "Presidential" hardliners migrated to an empty North America of their own on a human-free world, and peace finally came to the globe, although Tsarist (and later alt-Soviet) meddling left Russia more fragmented than ever. Tripartite Alliance World is now a full ITA member and the future is looking fairly bright.
[1] Kidding.